The common landforms in the Outer Coastal Plain are Sand dunes and flat wetlands.

Dunes and flat wetlands commonly characterize the Outer Coastal Plain. This region features a unique landscape shaped by coastal processes, including the accumulation of sandy soils and the presence of wetlands that support a diverse array of flora and fauna. Dunes provide critical habitats for various species and help protect the mainland from coastal erosion. Meanwhile, the flat wetlands play a vital role in water filtration and flood control, acting as natural buffers during storm surges. Together, these landforms create an ecologically rich environment that is essential for maintaining the health of coastal ecosystems.